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Number of items: **5**.

Puttamadaiah, C. and Gowda, H.
(1988)
*On spatial numerical ranges of operators on banach spaces.*
INDIAN JOURNAL OF PURE & APPLIED MATHEMATICS, 19 (2).
pp. 177-182.
ISSN 0019-5588

Puttamadaiah, C. and Huche Gowda,
(1987)
*Orthonormal sets and isoabelian operators on Banach spaces.*
Tamkang J. Math., 18 (4).
pp. 13-18.

Puttamadaiah, C. and Huche Gowda,
(1986)
*On generalised adjoint abelian operators on Banach spaces.*
Indian J. Pure Appl. Math., 17 (7).
pp. 919-924.

Unni, K. R. and Puttamadaiah, C.
(1986)
*On joint numerical ranges and joint normaloids in a C\ast-algebra.*
Tsukuba J. Math., 10 (1).
pp. 111-116.

Unni, K. R. and Puttamadaiah, C.
(1985)
*Some remarks on strictly convex semi-inner-product spaces.*
Bull. Calcutta Math. Soc., 77 (5).
pp. 261-265.